Fuel-oil burner



E. J. MOYNIHAN FUEL OIL BURNER lllj llum Patented 18, 1923.

UNITED STATES EUGENE JOHN HOYNIHAN, 0F SPRINGFIELD, MASSACHUSETTS.

rum-01L BURNER. j

Application filed June 30, 1921. Serial Io. 481,572.

To all whom it may concern:

Be it known that EUGENE J. Morm- HAN, a citizen of the United States, residing at Springfield, in the county of Hampden and State of Massachusetts, has invented certain new and useful Improvements in Fuel-Oil Burners; of which the following is a specification, reference being had to the accompanying drawing. 4

This invention refers to oil burners and more particularly adapted for the combus- The invention has among steam alone, or a combination of both as the condition may make desirable.

'To provide an arrangement for adjusting the wearing parts,'or.for their inspection or their repair or removal..

To provide the device with orifices for the fluid that will permit the most effective flow and use of the oil.

And many other" objects which will become 'apparent1:as the invention is more fully set forth.

In the past art, many practical difliculties have been experienced in the-use of fuel oil devices, in that they stick or do not provide for a proper burning of the oil. In the latter case, the oil will frequently blow right through the burner without being caught by the flame and burnt ef I through the nozzle,

fectively, thereby causing a great loss of thermal efiiciency in the use of the oil. Most burners are'such that they cannot be cleaned and inspected or repaired, which renders them more or less inconvenient to use; They also employ the principle of applying the pressure behind the fluid and as a part of the stream as ,the oil comes In thisinvention, the air or steam pressure is applied after the liquid fuel leaves the nozzle, mixes with it, and sprays it in a very atomized state through the mouth of the burner, which is enlarged on urpose to give a more effective action. T e manner of flowing the oil through the nozzle is such, that the oil is giving a twirling or displaced movement when it leaves the nozzle, and the air or steam is impressed behind the flow of oil in the nozzle and at a direction-that assists in breaking it up without interfering with the proper flow out of the'burner mouth. The flow is such that the spitting of the burner is positively prevented.

In the drawings which illustrate by way of example an embodiment of this invention,

Figurev 1 is aside view of'a burner bodymg this invention.

Figure 2 is a longitudinal section through the burner.

Figure 3 is a plan view of the burner; Figure 4a is a rear view of the burner.

\ Figure 5 is. a detail of the nozzle used in this invention;

Figure 6 is a modified form of'nozzle. Fi re 7 is another modified form of 'IIOZZ 8.

Similar reference characters refer to similar parts-throughout the drawings, 4

In the construction shown 1 represents a fuel pipe, attached to a burner 2 adapted for fuel oil burning. The burner has a rear chamber 3, provided with a threaded orifice 4 arranged to receive pipe 1, at its rear end. The chamber is hell shaped, preferably as shown in the drawings, and has its other end threadedinteriorly to engage over a nozzle body 5. The nozzlebody 1s threaded at ends 7 and inthe middle provided with a hexagon or tool engaging portion 8, which also forms a stop for the threading movement of the chamber memher and also -"of the mouthpiece '9 that threads thereon and swells out from the body as shown in the drawings.

The nozzle body has a cone shaped seat.

It) provided in the end facing the mouthpiece a small chambers ace 11v extending from the seat portion an below that there is an orifice 12 to permit an adjusting screw- 13 to project through. Several passages 14, angularly arranged point inwardly from the bottom of the nozzle body to and into the chamber space 11. A nozzle 24 of. inverted cone-shaped form rests on the seat in the body and is held thereon by means of a nut 16'that is threaded on the adjusting screw 13. The nozzle is provided with a plurality of spiral grooves 17 that begin from the nozzle end pointed in the chamber space 11 and terminate on the exterior face 18 that is in the mouthpiece, and adjacent to the bottom thereof.

through straight and do not terminate on the pe- The mouthpiece is provided with a plurality .of holes 19 which are arranged to rmit the insertion of air, steam or other uid piping; and the portion of the mouth piece for same isgarranged so as to make the piping direct at an angle across the portion in front of'the nozzle and towards the sides of the mouthpiece.

In the modifications of the nozzle that of Fi ure -6 is provided with passages the nozzle that are relatively riphery of the same. In Figure 7 the genoral surface spiral is used except that a short distance below the top surface of the nozzle, the latter is pierced so as to permit the orifices of the passages to appear a slight distance in from the periphery.

The operation of the devices is as follows. The oil is flowedinto the rear chamber 3 and fills its space. It then flows through the passages 14 to the chamber space 11 when it strikes the'adjusting screw and flows up into the grooves, thence being spirally.

, piece also restrain the fluid from being lost or misdirected. The position of the nozzle with respect to the open end of the mouth piece is about the same as the length of the cone nozzle. The adjustment of the nozzle permits the nozzle to be placed in a more effective position should it be required, due'to a variation of oils or fuels.

The face of the modified form shown in Figure 7 is concaved as indicated. The position of the air or steam suppl is such as to direct at the fuel orifices in t e nozzle and not only that the fuel may be caught as it comes out but also in aself-cleaning manner. Th mouthpiece is susceptible to adjustment so that its open end may be made most suitable with respect to anygeneral action of the fuel therein with respect to i. a open end.

While there areseveral forms of the inventi as indicated in the drawings, it is not intended or desired to limit this appiication to the particular construction shown nor in any other way otherwise than limited prior art, as it is well understood that. many modifications could be made using the same principles as this invention and coming within the scope of the appended claims.

Having thus described the invention,

what is claimed is:

1. A fuel oil burner comprising in combination, a bell sha an open restricted d mouthpiece having ottom, a cone shape nozzle having a plurality of spiral grooves V on its peripheral surface, said grooves terminating in the base surface of the nozzle,

a rear chamber member, and a union member for receiving the nozzle and ad ustably attaching the'rear chamber member and the mouthpiece together, and means for adjusting the nozzle in the union member.

2. A fuel oil burner comprising in combination, a bell shaped mouthpiece havin an open restricted bottom, a cone shaped nozzle having a plurality of spaced "splral grooves on its peripheral surface, said grooves windin from the smaller end of the nozzle to t e widened. base end, andemerging through the base end of the cone nozzle, a rear chamber member adapted to receive the fuel oil connections, a union member having a cone like recess to receive the nozzle with its widened base portion fac ing outwardly, and. with a relatively small chamber in rear of its restricted end and with a plurality of spaced passages entering from the rear chamber member into the small chamberaforesaid, and means for adjusting the 'cone nozzle into the cone .re-

cess into closer or looser contact with each other, said union member. being arranged to receive and hold the rear chamber mem-.

her and the open restricted bottom of the mouthpiece, and means in the mouthpiece for the insertionof'air or steam'into the mouth iece and into the fuel oil coming throng the grooves in the nozzle.

3. A fuel oil burner comprising in combination a bell shaped mouthpiece having a plurality of spaced air or steam orifices at its restricted end portion, said restricted portion being provided with an open threaded portion, a union member adjustably attached to the open threaded portion of the mouthpiece having an enlarged middle portion extending beyond the bottom of the mouthpiece, said member having an interior passage therethrough and a plurality of converging passages directed into the rear portion of the interior passage in the member, a nozzle having a plurality of spiral grooves beginning at the portion of the nozzle adjacent the converging passagesand terminating at the surface of the nozzle within the mouth iece and in rear thereof,

and. in the 31m 0 the air or steam orifices,

ari an adjusting screw on the end of thenozzle for adjusting the nozzle within .the interior passage and controlling the fuel to the grooves and their terminations in the mouthpiece, and a rear chamber member adjustably attachable to union member and adapted to provide a reservoired supply of 7 fuel to the nozzle.

In testimony whereof I hereunto aflix my signature in the presence of: two witnesses.

EUGENE JOHN MOYNIHAN.

Witnesses:

THOMAS H. STAPLETON, A. P. CONNOR. 

